The Marmot Rockaway 20 lets you stretch out in the big outside, offering extra width at the shoulder, waist and foot. Based on Marmot's successful Trestles Series, the roomy sleeping bag features SpiraFil high loft insulation, Shingle insulation construction and a classic trapezoidal foot box for cozy warmth. EN-tested to 20�F, the ergonomic bag has two-way zipper sliders for easy entry/exit.